fixed flake8 and black issues

Author: briancaffey

backend/apps/accounts/urls.py

@@ -1,4 +1,4 @@
-from django.urls import include, path, re_path
+from django.urls import include, path
 
 from . import views
 

backend/apps/core/constants.py

@@ -2,7 +2,7 @@
 # https://developers.google.com/identity/protocols/OpenIDConnect
 
 OAUTH = {
-    "github": {"name": "github", "url": "https://github.com/login/oauth/access_token",},
+    "github": {"name": "github", "url": "https://github.com/login/oauth/access_token"},
     "google-oauth2": {
         "name": "google-oauth2",
         "url": "https://oauth2.googleapis.com/token",

backend/apps/core/tasks.py

@@ -1,7 +1,6 @@
 import time
 
 import celery
-from celery.decorators import periodic_task
 from django.core.mail import send_mail
 
 from backend.celery_app import app